Alger County Climate
Alger County, Michigan
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
41.6°F
Annual Precip
35.9"
Annual Snowfall
162.5"
Extreme Heat Days
3
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
1,614
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Alger County
Climate Verdict
Alger County has a cool, averaging 41.6°F annually, moderate rainfall of 35.9 inches per year, rare extreme heat with only 3.1399999999999997 days above 90°F annually, heavy winter snowfall averaging 162.5 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 17.6°F. summers are pleasantly cool with July averaging 64.6°F. The 47°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Alger County is 4.1°F cooler than the Michigan statewide average of 45.7°F.
Climate Profile
About Alger County Weather
Deep Snow and True Northern Cold
Alger County records an average annual temperature of 41.6°F, making it one of the colder locales in the United States. Its climate is defined by heavy lake-effect precipitation and a winter that lasts much longer than the national norm.
Among Michigan's Coldest Regions
With an annual average of 41.6°F, Alger County ranks well below the state average of 45.7°F. It represents the rugged climate of the Upper Peninsula, where annual precipitation of 35.9 inches slightly exceeds the state average.
Warmer Than Baraga, Equal to the UP
Alger’s 41.6°F average is slightly warmer than neighboring Baraga County at 40.2°F. However, it faces significantly more snowfall than many neighbors, driven by its unique positioning along the Lake Superior shoreline.
Massive Snowfall Defines the Year
Alger County endures a staggering 162.5 inches of annual snowfall, nearly four times the state average. July remains cool with an average of 64.6°F, and the county typically sees only 3 days of extreme heat per year.
Heavy Equipment is a Requirement
A professional-grade snowblower is essential for managing the 162.5 inches of annual snow. Homeowners can likely skip central air conditioning, as the summer average stays a comfortable 62.7°F.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.